期刊名称：Journal of Radiation Research and Applied Sciences
印刷版ISSN：1687-8507
出版年度：2017
卷号：10
期号：3
页码：269-272
DOI：10.1016/j.jrras.2017.05.004
出版社：Elsevier B.V.
摘要：Abstract Radon, thoron and their short lived progenies have a significant contribution to natural background radiation. Long term exposure of such radiation increases the probability of occurrence of cancer at low to moderate levels. The present study covers 25 dwellings in Pirayiri region of the Palakkad district, Kerala, India, using twin cup based dosimeter. The data analysis shows that geometric mean of radon gas concentration (25.52 Bqm−3) and thoron concentration (14.58 Bqm−3) are slightly higher than the nation wide average value. However, the radon gas concentration range is within the limit of {UNSCEAR} East Asian values. Annual Effective Inhalation Dose limit is less than the action level limit (3 mSv/y), recommended by International Commission on Radiological Protection (ICRP).
关键词：Radon and thoron; Twin cup dosimeter; Radon monitoring; Inhalation dose
